Binding of Isaac Achievement: Leprosy
In-Game Secret Number
Defeat Delirium as Samson
Defeat Hush as The Forgotten
Enter every shop from Chapter 1 through Chapter 3 in one run
Unlocked a new co-player baby.
Defeat Delirium as ???
Get a 3-win streak
Defeat Delirium as Eden
Have The Battery, 9 Volt, and Car Battery in your collection
Beat Chapter 3 without taking damage
Collect every entry in the Bestiary (Bugged v190 - Mobs that don't exist in the bestiary are being counted. This allows Sin Collector to be unlocked without a complete bestiary)
Unlocked a new challenge.
Defeat Mom for the 1st time
Acquire both key pieces
Defeat Ultra Greedier as The Lost
Defeat Mom's Heart or It Lives! on hard modeas The Forgotten
Defeat Satan as The Forgotten
Increase in size 5 times in a single run. Sources of increased size include "One Makes you Larger" pills, XI - Strength, and Magic Mushroom
Take 50 devil deals
Defeat 20 portals
Take 25 devil deals
Collect 10 "tears up" items or pills in one run